Activated old vehicle without me knowing, debited my account and still waiting for my refund, pay back what's mine

So I cancelled my old Beame on my Audi in August as I sold the car, I then took a new Beame device on my New Polo and all the billing and account info was correct, all of a sudden my last debit order was way higher, when I checked the statement the Audi was back on, and activated . I called in so many times wasted so much airtime on calls which people could not help me, finally I asked for the manager and got to speak to George in the accounts option. He then raised the matter and I recived an email which stated the Audi was cancelled, same cancellation email I received in August, he confirmed I would get the refund, I'm still waiting, I called him a week later and he said this past Friday it would be paid, still nothing, he said on the system it showed I was given a call in November for a value added service and I excepted it, which I have no idea about, so let's say I apparently excepted this value added service, why would I add it on a car that I sold??? He said he would get IT to get the voice recording, I'm still waiting for this also. If I excepted any extra services it should be on the new car, I think someone messed up and I have to suffer. U guys took the money so pay it back. Calling the call centre is a waste of time, when I ask to speak to George cause he knows the problem I have to explain why I'm calling to every person like they can help me... then say ok wait transferring to George. Someone get back to me and let me have MY MONEY BACK